21811107

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{127}}^1\times {\mathrm{131}}^1$

素因数の和:303

約数の個数: 32

約数和(自身を含む): 32440320

約数和(自身を除く): 10629213

約数列:

[1, 3, 19, 23, 57, 69, 127, 131, 381, 393, 437, 1311, 2413, 2489, 2921, 3013, 7239, 7467, 8763, 9039, 16637, 49911, 55499, 57247, 166497, 171741, 316103, 382651, 948309, 1147953, 7270369, 21811107]

約数ペア:

[(1, 21811107), (3, 7270369), (19, 1147953), (23, 948309), (57, 382651), (69, 316103), (127, 171741), (131, 166497), (381, 57247), (393, 55499), (437, 49911), (1311, 16637), (2413, 9039), (2489, 8763), (2921, 7467), (3013, 7239)]